Indexable cutter insert

Details Indexable cutter insert Indexable cutter insert

1986-06-25

1987-07-14

Jordan, M.

Cutters, for shaping

Including tool having plural alternatively usable cutting edges

With integral chip breaker, guide or deflector

407 42, 407113, 408228, 408713, B23B 2716, B23C 520

Patent

active

046799680

ABSTRACT:
A cutter insert of the indexable type for a rotary cutter includes a body of a plate of a generally circular shape and having three notches of a V-shape formed in a circumferential face of the body in equally circumferentially spaced relation, each V-shaped notch being defined by a pair of first and second opposed walls. A front face of the body cooperates with the circumferential face, interrupted by the three V-shaped notches, to define three arcuate convex cutting edges each having a leading and a trialing end. A marginal portion of the front face disposed adjacent to and extending along each cutting edge serves as a rake surface for the cutting edge, the rake surface being recessed adjacent to the first wall of the V-shaped notch so as to slope toward a rear face of the body toward the first wall to provide a convex portion extending between the front face and the first wall. The first wall of each V-shaped notch, intersecting a respective one of the cutting edges at the leading edge thereof, is sloping toward the trailing end of the adjacent cutting edge at the second wall of the notch and is inclined with respect to a plane disposed perpendicular to the front face and passing through a center of a circle along which the one cutting edge extends and the leading end of the one cutting edge disposed at the first wall.

REFERENCES:
patent: 4512689 (1985-04-01), Bylund
patent: 4529339 (1985-07-01), Shimomura et al.
patent: 4588331 (1986-05-01), Yoshinori

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